Abrading machine



F. D. JOHNSON 2,431,939

ABRADING. MACHINE Filed Aug. 11, 1945 ating in the hub and Patented Dec.2, 1947 UNITED STATES PATENT OFFICE ABRADING MACHINE Franklin D.Johnson, Battle Creek, Mich. Application August 11, 1945, Serial No.610,221 4 Claims. (01. 51 -128) This invention relates to a device forsharpening and polishing cutlery and has for an object to provide meansfor sharpening knives and the like and means whereby the same may bepolished.

Another object of the invention is to provide an abrader and means formechanically holdin cutlery to be sharpened against the same.

A further object of the invention is to provide means whereby aplurality of knives or the like may be sharpened at one time.

A still further object of the invention is to provide in an abrader areciprocable cutlery holder.

Another object of my invention is to provide in a grinding machineresilient means whereby a plurality of knives or the like may be heldslidably moved against an emery wheel or the like.

And another object of the invention is to provide in a machine of theabove mentioned character means for driving a polishing brush or thelike.

Other features and advantages will become more readily apparent from thefollowing description and the accompanying illustrative drawingsinwhich:

Figure 1 is a vertical sectional view of my machine, a carriage beingremoved,

Figure 2 is a top plan view of the carriage,

Figure 3 is a side elevational view thereof, and

Figure 4 is a sectional view taken on line 4--4 of Figure 2, and

Figure 5 is a detail of her and emery wheel.

In the drawings and in the specification the same reference charactersare used to indicate like parts throughout and in which It), refers tomy knife sharpening machine, consisting of a frame H, which includes anelongated bearing 12, for a spindle l3, projecting at one end l4, intoan oil tight housin l5, and at the other end into an oil sump I6. Thewall l1, of housing I5, is provided with an extending hub I8, adapted tobe fixedly attached to the shaft l9, of a sausage machine, or any otherdriven machine or directly to a motor shaft (not shown) as indicated at20, by means of the head 2|, of the shaft 22, operprojecting intohousing I5, as at 23, and fixedly mounted on said part 23, is a largegear wheel 24, meshed with a pinion gear 25, fixed on said end I4, ofspindle l3.

Fixed on the end 26, of said spindle I3, is a large gear wheel 21,geared to a pinion 28, splined on shaft 29, supported in the bearings 30and 3|, forming a part of the frame ll. Also splined on the ends 32 and33, of the shaft 29, are a pair of a knife supporting memspaced emerywheels 34 and 35, having tapering outer peripheral portions 36 and 31,the purpose of which will presently be explained. The bearing members 30and 3|, support a table 38, having slots 39 and 40, through which theemery wheels project. Projecting up from each side of each wheel arepivot pins 4|, 42 and 43 and 44, all of which are located beyond saidwheelsand will be mentioned again.

vThe frame ll, includes the housing l5, with its removable wall 41, andthe sump IS, with its removable wall 48. Attached to the under wall ofthe table 38, are housing guards 49 and 50, for the wheels 34 and 35.The extreme outer end 5|, of shaft 29, is splined and projects throughan aperture 52, in the guard 56, which end is adapted to have apolishing wheel or buffer (not shown) attached thereto. A guard hood 53,is provided for said end 5|, when not in use. The frame structure II, isprovided with a bracing web 54.

A knife holder 55, comprises an elongated base 56, with one end 51,tapering and provided with a bore 58, adjacent its terminal 59, thepurpose of which is to engage one of the said pins 43 to 46, and itsother'narrowed end 60, terminates in a downwardly inclined handle 6|.Between said reduced ends 51 and 68, the longitudinal sides of the baseare turned up to provide angularly disposed flanges 62 and 63, which arerigid. Intermediate of these flanges is a vertically disposed fixed wall64, terminating in pins 65 and 66, upon which are pivoted the Wings 61and 68, and 69 and 16, of the longitudinal walls 1| and 12, whch areslightly spaced from the fixed flanges 62 and 63, respectively and whichtogether form slots 13 and 14, within which knife blades 15 or 16, maybe seated slidably. Springs 11 and 18, on one side and 19 and 80, on theother side are mounted between the wall 64, and said walls 1| and 12,whereby the latter walls are normally forced against said blades topress them (one at a time) against the opposite sides of one of theabove referred to emery wheels bevels 36 or 31. The said wings 68, 10,etc., are provided with horizontally disposed oval slots 10', throughwhich the pins 65 and 66, project in order to permit of slight slidingmovement of the walls 1| and 12, to provide the pressure of the knifeedge against the emery wheel. A stop 8|, is provided on the table, tolimit the outer pivotal movement of member 56, away from either wheel 34or 35, in order that the user of the device may not strike against thewheel not being used.

The walls 12 and 13 are provided with a series of Openings 82 and 83,etc., with struck in upper blade is then placed in the slot 13 or 14,nearest one side of one emery wheel, then the handle BI is moved towardthe wheel with one hand of the operator until the desired pressure ofthe knife against the wheel is obtained, then with his other hand theknife is moved. forward and back against the wheel until one side edgeof the, bladev is suflicicntly ground, then the knife holder is changedto the other side of the wheel, the knife changed to the opposite slotand the operation repeated. It is obvious that two operators may use thedevice at one and the same time.

It is thought that persons skilled in the art to which the inventionrelates will be able to obtain a clear understanding of the inventionafter considering the description in connection with the drawings.Therefore, a more lengthy description is regarded as unnecessary.

Changes in shape, size and. rearrangement of details and parts such ascome within the pur- View of the invention claimed may be resorted to,in actual practice, if desired.

Having now described my invention, that which I claim as. new and desireto procure by Letters Patent is:

1'. An abrading machine comprising in combination, a framework forming ahousing and a table on said housing, said table being provided with aplurality of openings, 2. driving shaft and a driven shaft rotatablyjournaled in. saidhousing, step-up gearing operativelyconnecting saidshafts, a plurality of abrading wheels mounted on said driven shaft, andeach protruding through one of said openings, a plurality of upstandingpins on said table, and av knife holder,- saidholder comprising a,U-shaped channel provided with an eye at. one end thereof and forming ahandle at its remaining end, anv upstanding 'n'biintennediately thesides of said channel, amovable wall between each of said sides and saidrib; compres:-- sion springs between said rib and each of said walls,and a plurality of rollers rotatably mount..- edon, each of said walls,the knife; being; slidably receivable betweensaid sides and saidrol1ers, and said eye being removably engageable with said pins wherebysaidholder and. said associatedkniie are adapted for selective coactioniwith; each side of eachof said wheels.

2. An abrading machine comprising in combination, a framework forming ahousing; and, atable, on said housing, said table being provided with aplurality of openings, a driven shaft r0- tatably journalled in saidhousing, a plurality of abrading wheels mounted on said shaft and eachprojecting through one of said openings, means for rotating said shaft,and a knife holder attachable to said table and comprising a U-shapedchannel and a pair of spring-pressed walls positioned in said channeladjacent the sides thereof, said channels and said walls coacting toform guides adapted to receive a knife.

3. An abrading machine comprising in combination, a framework forming ahousing and a table on said housing, said table being provided with aplurality of openings, a driven shaft rotatably journall-ed in saidhousing, a plurality of abrading wheels mounted on said shaft and eachprojecting through one of said openings, means forrotating said shaft,and a knife holder attachable to said table and comprising a U-shapedchannel, an upstanding rib intermediate the sides of said channel, amovable wall between each of said sides and said rib, and compressionsprings between said riband each of said walls, said walls coacting withsaid channel to'form guides adapted to slidably receive a knife.

4. An abrading machine comprising in combination a framework forming ahousing and a table on said housing, said table being provided'with aplurality of openings, a driven shaft rotatably journalled in saidhousing, a plurality of abrading wheels mounted on said shaft and eachprojecting through one of said openings, means for rotating said shaft,and a knife holder comprising a U-shaped channel adapted at one endthereof for removable attachment to said table and forming a handle atits remaining end, an upstanding ribintermediate the sides of saidchannel, a movable wall between each of said sides and said rib,compression springs between said rib and each of said walls, and aplurality ofrollers rotatably mounted on each of said walls, said sidesand said rollers constituting guides adapted toslidablyreceive a knife.

FRANKLIN D. JOHNSON.

REFERENCES CITED The following references are of record in the file ofthis patent:

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433,054 Sweet July 29, 1890 961,554 Sweet June 14, 1910 1,162,304;Neuens- Nov. 30, 1915- 1,726,571 Kelley Sept. 3, 1929 1,773,564Witzleben. Aug. 19', 1930' 1,831,863 Irwin Nov. 17, 1931 1 895,819.Remington Jan. 31, 1933 11,963,394: Yassenofi -1 June 19, 1934 2,021,602Jackson Nov. 19, 1935- 2,161,992 Battocchi June 13, 1939'

